Edwin d autel berry



April 14, 1931. E. D.. BERRY COOLER FOR CREAM AND OTHER LIQUIDS Original Filed Nov. '7, 19244 Reissued Apr. 14, 1931 UNITEDv STATES PATENT OFFICE EDWIN DANIELA BERRY, 0F PALMEBSTON NORTH, NEW ZEALAND, ASSIGNOR TO HENRY i y OTTERHOLT, 0F CAPETOWN, SOUTH AFRICA COOLER FOR CREAM AND OTHER LIQUIDS riglnal No. 1,508,040, dated August 91, 1926, Serial No. 748,471, led November 7, 1924, and in NewV Zealand February 16, 1924. Application for reissue led February 27, 1928. Serial 110.257,390.

This invention relates lto a new and imroved construction of cooler, employing iiumid ammonia gas as the cooling medium, that has been devised specially for use in dairy factories and like places for the coolatmospheric conditions, as is the` case with the surface coolers generally used in similar circumstances. It is generally conceded that cream while cooling becomes absorbent to the surrounding air conditions and as these sometimes are charged with fumes or odors that are deleterious to the cream', the cream is liable to be affected thereby. With this invention in use, therefore, this liability is removed. j

Provision is also made n the construction of .the cooler, for the cream and the cooling medium flowing side by side throughout a continuous zig-zag course and in the. same direction, so that the cream at its highest tem rature comes under the inuence of the cooling medium at its lowest temperature, and thus especially in the case of ammonia s as the cooling medium, any liability of leezing taking place to check the flow 1s obviated, and, moreover, the cooling operation carried on right throughout the course of the li uid.

' e invention consists in a special construction `01E appliance whereby these results are obtained, and embodies special details of construction'by the employment of which important advantages in the working and general care and oversight of the cooler, are obtained.

A These general features and details of construction are 'shown in the accompanying drawings and will be hereinafter fully explained in relation thereto.

In such drawings Figure 1 is an end elevation of the cooler.

Figure 2 is a side elevation thereof showing portion of an insulated casing broken away.

Figure 3 is an enlarged sectional elevation showlng the manner of forming the joint between two of the tubular elements of the cool- Fig. 4 is a fragmentary view showing the relative curvature of one of the sets of tubes employed in the device.

The cooler, as made in accordance with this invent-ion, is formed by a number of jacketed tubular elements arranged to extend in parallel lines, one above the other, between vertical end frames or standards A, each of such elements being formed by an internal tube B and an outer jacket tube C. 1 The ends of the internal tube B of each element are carried out through the respective end fra-mes A and the adjacent ends are then connected together by semi-circular unions D so arranged relatively at both ends of the cooler that a continuous zig-'zag passage is obtained from one end of the bottom tube B throughout al1 of the tubes in turn to the end of the top tube. Each end is fitted to 'connect with pipes through which the creamv supply is led into the bottom tube and is carried away from the top* tube, the flow through the series being mamtained by pumping or other desired power.

Each jacket tube C, at each end of the element, is closed in around the tube B by drawing or otherwise, and the several jacket tubes of the series are connected together by unions E obtained by Welding or otherwise. disposed near their ends so that one contin-l uous zig-zag course is obtained from theend of the lowest jacket corresponding to the inlet-end of the lowest tube B, through all of the jackets `in turn, to t-he end of the topl most jacket corresponding to the outlet end of the highest tube B.

An inlet nozzle Fis provided in the end of the bottom element jacket through which the, ammonia supply is led, and an outlet G of the required larger diameter leads from the end ofthe top element jacket, and in practlce may be fitted with a pressure gauge.

Thus the cream to be cooled may be sent along within the tubes B while the cooling um am Cream( A towards the ends. This is particulaily--oi-lad` sBas pre-Vv venting the accumulation ofmatter therein vantage-with@ inner cream-tube and facilitating the cleaning of the tubes with hot water and the drainingaway of'anyfresidue. The end to end bending of the elements wiillalsoprovide for the expansion and contractionJ o the tubes -brouglit'about bythe conditions governing the ,useV of the cooler,

without afectingthe joints with which the' tubes B are connected tothe end framesA.'

Thel inner tubeB is also preferably given less arch from' end to end than the outer jacket' in order thatl it Inaybend upwards to a greater extent and still leave a clear annular space between the tube and the jacket.

The'unions Dare sosecured'in position to connect the respective ends of" the tubes B that they mayl be readily removed andV replaced Whenever required. When. these unions are removed the tubes B are left open from end toend,.so thatcleansing appliances may be pushed or drawn through themg, The mannerjof formingtheends' of the tubes and the union joints is shown in the detail'Figure 3. Eachltube 13"V at its extrem'rtyis'v turned out overthedrawn in end of the jacket tube C, so

that' a socket end C is formed. I The union D' at'feachk end` of the' semi-circular Vpassage throughit, isformed with" a shoulder D that is made-to enterthe socket end ofthe tube C, such end then engaging a' shoulder D? formedl around thefirst mentioned"shoulder..l A suit-f ablerubber or like packing'washer'H is arr Y ranged upon this shoulder. On` each side lofi the. union a' angeJ is formed to project laterally outward,l`such iange: having a slot J extendingin from its edge. On the outer side ofthe frame A a number of bolts K are hinged' so that two areV providedV for Veach union, one'on'each sidethereof.- Each bolt is designed to beturnedouttos'enterthe slot J f ofthecorresponding'angeJ and is provided' with aY wing nutscrewedon' toits end, which by engagingjthe flange on the edges of the slot', Willcausev the union to be vforced in hard uponthe endsiof thev tubes Blwithia rubber washerbetween to makethe required liquidtight joints therewith." When the nuts are loosened,` the bolts maybeturnedout to free the union so that the union may then be re" moved: Y y

The appliance'thus made will'have its sides coveredfidby casing plates M'extending be'- tween the end.' frames A and the. space be-I tweenf packed' with"a n approved insulatingV niedi'umthatwill serve toV conserve vthe coolingx'eectof the'coolingmedium upon the 1. A cooler ofthe class described, comprising end frames, inner tubes connecting said end frames and extending through openings therein, jacket tubes, each associated with one of said inner tubes andV of greater diameter than-said inner tubes,vsaid jacket tubes having diametrically reduced ends fitted around said inner.- ltubes,rsaid`f inner tubes having reversely folded Aends extending around and titted on the; endsof' the jacket tubes, unions connecting the inner tubes in pairs, and con- I nection'sbetween the j acket tubes;

2; A coolerof the class describ'ed,compris ing end frames, inner tubes connecting said end frames and extending througli'openings therein, j'acket'tubes, each associatedwithfone of saidinnertubes and `ofv eater diameter than said inneritubes, said jacket tubes hav ing diametricallyreduced ends ttiedV around' said'inner tubes, said inner tubes having reversely folded ends extending around and fitted on the ends ofthe jacket" tubes, unions connecting the inner tubes in pairs, said unions having shouldered ends fit-ted in the ends ofsaid'innertubes, and packing wash,-` ers on' said shouldered ends ofsaid unions and between the same andthe reversely folded ends of the inner tubes.

3. In a cooling device, the combination of a plurality of pairs of tubes, ,one of-said tubes of each pair'beingiarrangediwithinthe otherv and yin spacedV relationthereto', the outer -tube providing a passagefor the cooling-medium and theinner tube providing a passage for theV commodity vbecoo'led, .and said tubesbe-f ingbent relatiyely'to each other in the lsaine dire'actionfroml the ends tothe centerbffsaid tubes.

4..-1'11- a coonngfeevicethe combinations@ 1':

a plurality"ofpairsofgtubesmne tube of each pair being arranged-within theother and in spaced )relation thereto, said 'tubes of each pairl being bent' in the ysame direction 'from' the ends to the center thereof; the outer' tube being` connected with any adj acentouter' tube, andone of' said'tubesbeing of a different arc thenthe other,'fthe inner tube' being. confA nected with an adjacent inner'tube`,theinlet tofboth tubesbeing arranged at one end? of said tubes.

' 5. In a coolingdevice, the combination of a plurality of pairs of tubes, one tube ofleach pair being located within the VotherA and in spaced relation thereto, the inner tubev being" connected with an adjacent innerftube; *and* the outertubefbein "connected Withan-adja-a centouter tube, sai tubes of each pair being bent relatively toeachV other from the' endsv to thecenter thereof..'

6. In a. cooling'device, thecombinationof' inner tube being bent at a lesser arch than the outer tube.

7. In a coolin device, the combination of a plurality of tues, one of which is arranged 5 within and in spaced relation to the other, the end of one tube being extended over the edge of an end of the other tube and providingea closure for the end of the last mentioned tu 10 8. In a coolin device, the combination of a plurality of tu s, one of which is arranged wlthin and in spaced relation tod the other, the end of the other tube being reduced to engage the inner tube, and one of said tubes 1; being extended over the edge of t-he other to provide a closure for the end of the latter.

- 9. In a cooling device, the combination of a plurality of tubes, one of which is arranged wlthin and in spaced relation to the other,

' one of said tubes being bent from its ends to the center thereof, and one of said tubes being extended over the edge of the other to provide a closure for the end of the latter.

10. In a cooling device, the combination of a plurality of tubes, one of which is located wlthin and in spaced relation to the other,

each of said tubes being bent from its ends to the center thereof, and one of said tubes being extended over the edge of the other to pro- .'.fe vide a closure for the end of the latter.

11. In a cooling device, the combination of a pair of tubes, one of which is located within the other and in spaced relation thereto, the end of one of the tubes being formed to re- 35 ceive the end of the other and provide a seal between said tubes and a seat for an element adapted to be associated therewith, which element provides a communication between one of the tubes and a similar tube of an ad- 4.; jacent pair.

In witness whereof, I have hereunto subscribed my name this 30th day of May, A. D.

EDWIN DANIEL BERRY. 

